🔧 Camunda 7.x - 8.8 to 8.9 Migration Project Report

Complete migration analysis
📅 2026-07-07 06:23:48
Camunda BPMN
8.9.0
Camunda SDK
8.5.0
Spring Boot
3.4.0
JDK
21
9
BPMN Processes
✅ Migrated
59
Source Nodes
✅ Parsed
59
Migrated Nodes
✅ Parsed
6
Delegates Referenced
✅ Found
0
Delegates in JAR
⚠️ 6 not in JAR
0
Spring Boot Workers
✅ Generated
0
Plain Java Workers
✅ Generated
0
Service Tasks
✅ Converted
0
User Tasks
⚠️ 0 No Forms
0
Script Tasks
⚠️ Need Workers
0
FEEL Expressions
✅ Converted
0
Forms
✅ Migrated
1
Critical/High Issues
🚨 Must Fix

📊 Complexity Distribution

Simple 5
Medium 4
Complex 0
Very Complex 0
Critical 0
Very Critical 0
Extreme Critical 0

📋 Executive Summary

📊
9 BPMN processes migrated successfully
☕
6 JavaDelegates referenced in BPMN → 0 found in JAR ⚠️ 6 missing
⚙️
0 Plain Java workers generated from available delegates
📝
0 Script Tasks across 0 processes
⚠️
1 critical/high and 0 medium issues
🎯
0 FEEL expressions converted from JUEL

📊 Process Complexity Distribution

BPMN File Score Process Complexity Nodes Service Script User Gateways Events Timer Cancel Comp Cond Trans Java
huge-campaign-process.bpmn 31 Huge Campaign Process Medium 11 1 0 0 0 0 0 0 0 0 0 1
bucket-process.bpmn 28 Bucket Process Simple 5 1 0 0 0 0 0 0 0 0 0 1
distributed-bucket-process.bpmn 33 Distributed Bucket Process Medium 5 1 0 0 0 0 0 0 0 0 0 1
multi-instance-simple-example.bpmn 36 MI Call Activity process Medium 5 2 0 0 0 0 0 0 0 0 0 2
campaign-process.bpmn 28 Campaign Process Simple 5 1 0 0 0 0 0 0 0 0 0 1
large-campaign-process.bpmn 28 Large Campaign Process Simple 5 1 0 0 0 0 0 0 0 0 0 1
multi-instance-example.bpmn 31 Campaign Process Medium 12 1 0 0 0 0 0 0 0 0 0 1
modeling-concept.bpmn 22 modeling-concept Simple 8 1 0 0 0 0 0 0 0 0 0 0
letter-process.bpmn 14 Letter Process Simple 3 1 0 0 0 0 0 0 0 0 0 1

☕ Delegate to Worker Mapping

Java Delegate Used In Plain Java Worker Spring Boot Worker
CAMUNDA — —
bucketCreation huge-campaign-process.bpmn→Create buckets, large-campaign-process.bpmn→Create buckets and 1 more... — —
itemListCreation bucket-process.bpmn→Get Items from bucket, distributed-bucket-process.bpmn→Get Items from bucket and 1 more... — —
letterCreation letter-process.bpmn→Create letter — —
resultLogging multi-instance-simple-example.bpmn→Show results — —
sequenceCreation multi-instance-simple-example.bpmn→Create sequence — —
Summary: 6 delegates referenced in BPMN → 0 found in JAR → 0 Spring Boot workers + 0 Plain Java workers generated | ⚠️ 6 delegate(s) missing from JAR: resultLogging, CAMUNDA, letterCreation, bucketCreation, itemListCreation, sequenceCreation

📦 JAR Summary

Category Count Description
Plain Java Individual JARs 0 None generated
Spring Boot Individual JARs 0 None generated
Plain Java Group JAR 0 None generated
Spring Boot Group JAR 0 None generated
ScriptWorker Individual JARs 0 None generated
TOTAL JARs 0 All JAR files generated
Deployment Options: Microservice (0 JARs) | Monolith (Spring Boot: 0 JAR) | Monolith (Plain Java: 0 JAR)

🔄 Transformation Analysis - Actual BPMN Nodes

Note: All BPMN nodes are listed.

BPMN File Name Score Source Node Source ID Source Type Migrated Node Migrated ID Migrated Type Status
huge-campaign-process.bpmn 31 Campaign started StartEvent_1 Start Campaign started StartEvent_1 Start ✅ Preserved
Create buckets Activity_03qeja2 Service Task Create buckets Activity_03qeja2 Service Task ✅ Preserved
Campaign finished Event_1g84ij5 End Campaign finished Event_1g84ij5 End ✅ Preserved
Bucket-processing Activity_1jkr78e Sub Process Bucket-processing Activity_1jkr78e Sub Process ✅ Preserved
Event_02l7uck Start Event_02l7uck Start ✅ Preserved
Start bucket execution Activity_1m0lf3l Send Task Start bucket execution Activity_1m0lf3l Send Task ✅ Preserved
Get bucket result Activity_11esqt8 Receive Task Get bucket result Activity_11esqt8 Receive Task ✅ Preserved
Event_1099k31 End Event_1099k31 End ✅ Preserved
TextAnnotation_0rhzkaq textAnnotation TextAnnotation_0rhzkaq textAnnotation ✅ Preserved
TextAnnotation_119dzy1 textAnnotation TextAnnotation_119dzy1 textAnnotation ✅ Preserved
TextAnnotation_02ee1xu textAnnotation TextAnnotation_02ee1xu textAnnotation ✅ Preserved
bucket-process.bpmn 28 Letter processing Activity_1565dj9 Call Activity Letter processing Activity_1565dj9 Call Activity ✅ Preserved
Get Items from bucket Activity_1b37bjl Service Task Get Items from bucket Activity_1b37bjl Service Task ✅ Preserved
Bucket should be processes Event_1ju1rbf Start Bucket should be processes Event_1ju1rbf Start ✅ Preserved
Bucket done Event_0p7uh4v End Bucket done Event_0p7uh4v End ✅ Preserved
TextAnnotation_1w7mvk4 textAnnotation TextAnnotation_1w7mvk4 textAnnotation ✅ Preserved
distributed-bucket-process.bpmn 33 Bucket should be processes Event_1ju1rbf Start Bucket should be processes Event_1ju1rbf Start ✅ Preserved
Bucket done Event_0p7uh4v End Bucket done Event_0p7uh4v End ✅ Preserved
Letter processing Activity_1565dj9 Call Activity Letter processing Activity_1565dj9 Call Activity ✅ Preserved
Get Items from bucket Activity_1b37bjl Service Task Get Items from bucket Activity_1b37bjl Service Task ✅ Preserved
TextAnnotation_1w7mvk4 textAnnotation TextAnnotation_1w7mvk4 textAnnotation ✅ Preserved
multi-instance-simple-example.bpmn 36 StartEvent_1 Start StartEvent_1 Start ✅ Preserved
Subprocessing Activity_1l743sj Call Activity Subprocessing Activity_1l743sj Call Activity ✅ Preserved
Create sequence Activity_0pahx6t Service Task Create sequence Activity_0pahx6t Service Task ✅ Preserved
Event_02e5cqb End Event_02e5cqb End ✅ Preserved
Show results Activity_1i4v707 Service Task Show results Activity_1i4v707 Service Task ✅ Preserved
campaign-process.bpmn 28 Campaign started StartEvent_1 Start Campaign started StartEvent_1 Start ✅ Preserved
Get campaign items Activity_14ibl90 Service Task Get campaign items Activity_14ibl90 Service Task ✅ Preserved
Letter processing Activity_1qvfx0i Call Activity Letter processing Activity_1qvfx0i Call Activity ✅ Preserved
Campaign completed Event_0bflgu2 End Campaign completed Event_0bflgu2 End ✅ Preserved
TextAnnotation_1nt5qd0 textAnnotation TextAnnotation_1nt5qd0 textAnnotation ✅ Preserved
large-campaign-process.bpmn 28 Campaign started StartEvent_1 Start Campaign started StartEvent_1 Start ✅ Preserved
Create buckets Activity_103ipqc Service Task Create buckets Activity_103ipqc Service Task ✅ Preserved
Bucket processing Activity_160u0ab Call Activity Bucket processing Activity_160u0ab Call Activity ✅ Preserved
Campaign completed Event_0vkjw1v End Campaign completed Event_0vkjw1v End ✅ Preserved
TextAnnotation_1vwzztu textAnnotation TextAnnotation_1vwzztu textAnnotation ✅ Preserved
multi-instance-example.bpmn 31 Campaign started StartEvent_1 Start Campaign started StartEvent_1 Start ✅ Preserved
Create buckets Activity_03qeja2 Service Task Create buckets Activity_03qeja2 Service Task ✅ Preserved
Campaign finished Event_1g84ij5 End Campaign finished Event_1g84ij5 End ✅ Preserved
Bucket-processing Activity_1jkr78e Sub Process Bucket-processing Activity_1jkr78e Sub Process ✅ Preserved
Event_02l7uck Start Event_02l7uck Start ✅ Preserved
Start bucket execution Activity_1m0lf3l Send Task Start bucket execution Activity_1m0lf3l Send Task ✅ Preserved
Get bucket result Activity_11esqt8 Receive Task Get bucket result Activity_11esqt8 Receive Task ✅ Preserved
Event_1099k31 End Event_1099k31 End ✅ Preserved
TextAnnotation_1aubk5h textAnnotation TextAnnotation_1aubk5h textAnnotation ✅ Preserved
TextAnnotation_0rhzkaq textAnnotation TextAnnotation_0rhzkaq textAnnotation ✅ Preserved
TextAnnotation_119dzy1 textAnnotation TextAnnotation_119dzy1 textAnnotation ✅ Preserved
TextAnnotation_02ee1xu textAnnotation TextAnnotation_02ee1xu textAnnotation ✅ Preserved
modeling-concept.bpmn 22 Complete process started StartEvent_1 Start Complete process started StartEvent_1 Start ✅ Preserved
Get the buckets Activity_1gpt5gc Service Task Get the buckets Activity_1gpt5gc Service Task ✅ Preserved
All items finished Event_08zmenl End All items finished Event_08zmenl End ✅ Preserved
Bucket processing Activity_02gvorx Sub Process Bucket processing Activity_02gvorx Sub Process ✅ Preserved
Event_00w0qil Start Event_00w0qil Start ✅ Preserved
Start bucket processing Activity_0b043o3 Send Task Start bucket processing Activity_0b043o3 Send Task ✅ Preserved
Bucket completed Activity_1i2dpe8 Receive Task Bucket completed Activity_1i2dpe8 Receive Task ✅ Preserved
Event_15frw3x End Event_15frw3x End ✅ Preserved
letter-process.bpmn 14 Letter should be created Event_0rw31ru Start Letter should be created Event_0rw31ru Start ✅ Preserved
Create letter Activity_1rm3wel Service Task Create letter Activity_1rm3wel Service Task ✅ Preserved
Letter completed Event_0z0lyrb End Letter completed Event_0z0lyrb End ✅ Preserved
TOTAL NODES ANALYZED: 59
Source Nodes: 59 → Migrated Nodes: 59 Diff: 0
✅ Preserved  |  🔄 Changed  |  🔵 Transformed  |  🟠 Review Required  |  🔴 Verify Required  |  ❌ Removed  |  ✅ New Node Added
📄 huge-campaign-process.bpmn ✅ Success Medium
Huge Campaign Process Nodes: 11 Transforms: 0 Warnings: 0 Special: 0 Delegates: 1 ▼
Process ID: HugeCampaignProcess  |  Version: Camunda 8.9.0 Complexity: Medium Process Name: Huge Campaign Process
📋 Java Delegate Usage & Worker Mapping
S.No Java Delegate Used In Task Plain Java Workers Spring Boot Workers
1 bucketCreation Create buckets — —
📋 Source BPMN
✅ Converted BPMN
# Parent Node ID Node Name Original Type Converted Type Status
1 -- (Start) StartEvent_1 Campaign started Start Start ✅ Success
2 -- (Start) Activity_03qeja2 Create buckets Service Task Service Task ✅ Success
3 -- (Start) Event_1g84ij5 Campaign finished End End ✅ Success
4 -- (Start) Activity_1jkr78e Bucket-processing Sub Process Sub Process ✅ Success
5 -- (Start) Event_02l7uck Start Start ✅ Success
6 -- (Start) Activity_1m0lf3l Start bucket execution Send Task Send Task ✅ Success
7 -- (Start) Activity_11esqt8 Get bucket result Receive Task Receive Task ✅ Success
8 -- (Start) Event_1099k31 End End ✅ Success
9 -- (Start) TextAnnotation_0rhzkaq textAnnotation textAnnotation ✅ Success
10 -- (Start) TextAnnotation_119dzy1 textAnnotation textAnnotation ✅ Success
11 -- (Start) TextAnnotation_02ee1xu textAnnotation textAnnotation ✅ Success
📄 bucket-process.bpmn ✅ Success Simple
Bucket Process Nodes: 5 Transforms: 0 Warnings: 0 Special: 0 Delegates: 1 ▼
Process ID: BucketProcess  |  Version: Camunda 8.9.0 Complexity: Simple Process Name: Bucket Process
📋 Java Delegate Usage & Worker Mapping
S.No Java Delegate Used In Task Plain Java Workers Spring Boot Workers
1 itemListCreation Get Items from bucket — —
📋 Source BPMN
✅ Converted BPMN
# Parent Node ID Node Name Original Type Converted Type Status
1 -- (Start) Activity_1565dj9 Letter processing Call Activity Call Activity ✅ Success
2 -- (Start) Activity_1b37bjl Get Items from bucket Service Task Service Task ✅ Success
3 -- (Start) Event_1ju1rbf Bucket should be processes Start Start ✅ Success
4 -- (Start) Event_0p7uh4v Bucket done End End ✅ Success
5 -- (Start) TextAnnotation_1w7mvk4 textAnnotation textAnnotation ✅ Success
📄 distributed-bucket-process.bpmn ✅ Success Medium
Distributed Bucket Process Nodes: 5 Transforms: 0 Warnings: 0 Special: 0 Delegates: 1 ▼
Process ID: DistributedBucketProcess  |  Version: Camunda 8.9.0 Complexity: Medium Process Name: Distributed Bucket Process
📋 Java Delegate Usage & Worker Mapping
S.No Java Delegate Used In Task Plain Java Workers Spring Boot Workers
1 itemListCreation Get Items from bucket — —
📋 Source BPMN
✅ Converted BPMN
# Parent Node ID Node Name Original Type Converted Type Status
1 -- (Start) Event_1ju1rbf Bucket should be processes Start Start ✅ Success
2 -- (Start) Event_0p7uh4v Bucket done End End ✅ Success
3 -- (Start) Activity_1565dj9 Letter processing Call Activity Call Activity ✅ Success
4 -- (Start) Activity_1b37bjl Get Items from bucket Service Task Service Task ✅ Success
5 -- (Start) TextAnnotation_1w7mvk4 textAnnotation textAnnotation ✅ Success
📄 multi-instance-simple-example.bpmn ✅ Success Medium
MI Call Activity process Nodes: 5 Transforms: 0 Warnings: 0 Special: 0 Delegates: 2 ▼
Process ID: MICallActivityProcess  |  Version: Camunda 8.9.0 Complexity: Medium Process Name: MI Call Activity process
📋 Java Delegate Usage & Worker Mapping
S.No Java Delegate Used In Task Plain Java Workers Spring Boot Workers
1 sequenceCreation Create sequence — —
2 resultLogging Show results — —
📋 Source BPMN
✅ Converted BPMN
# Parent Node ID Node Name Original Type Converted Type Status
1 -- (Start) StartEvent_1 Start Start ✅ Success
2 -- (Start) Activity_1l743sj Subprocessing Call Activity Call Activity ✅ Success
3 -- (Start) Activity_0pahx6t Create sequence Service Task Service Task ✅ Success
4 -- (Start) Event_02e5cqb End End ✅ Success
5 -- (Start) Activity_1i4v707 Show results Service Task Service Task ✅ Success
📄 campaign-process.bpmn ✅ Success Simple
Campaign Process Nodes: 5 Transforms: 0 Warnings: 0 Special: 0 Delegates: 1 ▼
Process ID: CampaignProcess  |  Version: Camunda 8.9.0 Complexity: Simple Process Name: Campaign Process
📋 Java Delegate Usage & Worker Mapping
S.No Java Delegate Used In Task Plain Java Workers Spring Boot Workers
1 itemListCreation Get campaign items — —
📋 Source BPMN
✅ Converted BPMN
# Parent Node ID Node Name Original Type Converted Type Status
1 -- (Start) StartEvent_1 Campaign started Start Start ✅ Success
2 -- (Start) Activity_14ibl90 Get campaign items Service Task Service Task ✅ Success
3 -- (Start) Activity_1qvfx0i Letter processing Call Activity Call Activity ✅ Success
4 -- (Start) Event_0bflgu2 Campaign completed End End ✅ Success
5 -- (Start) TextAnnotation_1nt5qd0 textAnnotation textAnnotation ✅ Success
📄 large-campaign-process.bpmn ✅ Success Simple
Large Campaign Process Nodes: 5 Transforms: 0 Warnings: 0 Special: 0 Delegates: 1 ▼
Process ID: LargeCampaignProcess  |  Version: Camunda 8.9.0 Complexity: Simple Process Name: Large Campaign Process
📋 Java Delegate Usage & Worker Mapping
S.No Java Delegate Used In Task Plain Java Workers Spring Boot Workers
1 bucketCreation Create buckets — —
📋 Source BPMN
✅ Converted BPMN
# Parent Node ID Node Name Original Type Converted Type Status
1 -- (Start) StartEvent_1 Campaign started Start Start ✅ Success
2 -- (Start) Activity_103ipqc Create buckets Service Task Service Task ✅ Success
3 -- (Start) Activity_160u0ab Bucket processing Call Activity Call Activity ✅ Success
4 -- (Start) Event_0vkjw1v Campaign completed End End ✅ Success
5 -- (Start) TextAnnotation_1vwzztu textAnnotation textAnnotation ✅ Success
📄 multi-instance-example.bpmn ✅ Success Medium
Campaign Process Nodes: 12 Transforms: 0 Warnings: 0 Special: 0 Delegates: 1 ▼
Process ID: campaignProcess  |  Version: Camunda 8.9.0 Complexity: Medium Process Name: Campaign Process
📋 Java Delegate Usage & Worker Mapping
S.No Java Delegate Used In Task Plain Java Workers Spring Boot Workers
1 bucketCreation Create buckets — —
📋 Source BPMN
✅ Converted BPMN
# Parent Node ID Node Name Original Type Converted Type Status
1 -- (Start) StartEvent_1 Campaign started Start Start ✅ Success
2 -- (Start) Activity_03qeja2 Create buckets Service Task Service Task ✅ Success
3 -- (Start) Event_1g84ij5 Campaign finished End End ✅ Success
4 -- (Start) Activity_1jkr78e Bucket-processing Sub Process Sub Process ✅ Success
5 -- (Start) Event_02l7uck Start Start ✅ Success
6 -- (Start) Activity_1m0lf3l Start bucket execution Send Task Send Task ✅ Success
7 -- (Start) Activity_11esqt8 Get bucket result Receive Task Receive Task ✅ Success
8 -- (Start) Event_1099k31 End End ✅ Success
9 -- (Start) TextAnnotation_1aubk5h textAnnotation textAnnotation ✅ Success
10 -- (Start) TextAnnotation_0rhzkaq textAnnotation textAnnotation ✅ Success
11 -- (Start) TextAnnotation_119dzy1 textAnnotation textAnnotation ✅ Success
12 -- (Start) TextAnnotation_02ee1xu textAnnotation textAnnotation ✅ Success
📄 modeling-concept.bpmn ⚠️ With Warnings Simple
unnamed Nodes: 8 Transforms: 0 Warnings: 1 Special: 0 Delegates: 0 ▼
Process ID: Process_1300k10  |  Version: Camunda 8.9.0 Complexity: Simple ⚠️ Missing Process Name
✅ Improvement Suggestions
[MEDIUM] Process has no meaningful name
💡 Add a descriptive process name for better identification
🏗️ Camunda 8 Way: Use meaningful process names in BPMN
📋 Source BPMN
✅ Converted BPMN
# Parent Node ID Node Name Original Type Converted Type Status
1 -- (Start) StartEvent_1 Complete process started Start Start ✅ Success
2 -- (Start) Activity_1gpt5gc Get the buckets Service Task Service Task ✅ Success
3 -- (Start) Event_08zmenl All items finished End End ✅ Success
4 -- (Start) Activity_02gvorx Bucket processing Sub Process Sub Process ✅ Success
5 -- (Start) Event_00w0qil Start Start ✅ Success
6 -- (Start) Activity_0b043o3 Start bucket processing Send Task Send Task ✅ Success
7 -- (Start) Activity_1i2dpe8 Bucket completed Receive Task Receive Task ✅ Success
8 -- (Start) Event_15frw3x End End ✅ Success
⚠️ Warnings - Action Required
📌 Unknown
Issue: Service Task 'Get the buckets' has no delegate
💡 Recommendation: Create a Zeebe Job Worker
📄 letter-process.bpmn ✅ Success Simple
Letter Process Nodes: 3 Transforms: 0 Warnings: 0 Special: 0 Delegates: 1 ▼
Process ID: letterProcess  |  Version: Camunda 8.9.0 Complexity: Simple Process Name: Letter Process
📋 Java Delegate Usage & Worker Mapping
S.No Java Delegate Used In Task Plain Java Workers Spring Boot Workers
1 letterCreation Create letter — —
📋 Source BPMN
✅ Converted BPMN
# Parent Node ID Node Name Original Type Converted Type Status
1 -- (Start) Event_0rw31ru Letter should be created Start Start ✅ Success
2 -- (Start) Activity_1rm3wel Create letter Service Task Service Task ✅ Success
3 -- (Start) Event_0z0lyrb Letter completed End End ✅ Success

📚 Appendix: Reference Documentation

Camunda 8.9 Official Documentation

Specific Migration Guides

💡 All links are to the official Camunda 8.9 documentation. For the most up-to-date information, please refer to the official documentation.

Generated by Camunda Migration Tool

2026-07-07 06:23:48